<em>一、npm 安装</em>
<u>npm install  --save</u> <b>three</b>
<em>二、require 引入</em>
<em>const</em> <s>Three</s> = <u>require</u>(<b>'three'</b>)
<em>const scene</em> = <u>new <s>Three</s>.Scene( )</u>
<em>三、import 引入全部</em>
<u>import * as <s>Three</s> from</u> <b>'three'</b>
<em>const scene</em> = <u>new <s>Three</s>.Scene( )</u>
<em>四、import 引入模块</em>
<u>import { <s>Scene</s> } from</u> <b>'three'</b>
<em>const scene</em> = <u>new <s>Scene</s>( )</u>
<em>五、import 引入  examples 模块</em>
<u>import <s>SVGRenderer</s> from</u> <b>'examples/js/zh/renderers/SVGRenderer'</b>